Added Login + Working on pdf creation

src/worker/tasks/common/pdf_converter.py

@@ -0,0 +1,83 @@
+from abc import ABC, abstractmethod
+from pathlib import Path
+
+import pypandoc
+from PIL import Image
+from reportlab.lib.pagesizes import A4
+from reportlab.pdfgen import canvas
+
+from tasks.common.converter_utils import generate_uuid_filename
+
+
+class BaseConverter(ABC):
+  """Abstract base class for file converters to PDF."""
+  
+  def __init__(self, input_path: str, output_dir: str = ".") -> None:
+    self.input_path = Path(input_path)
+    self.output_dir = Path(output_dir)
+    self.output_path = self.output_dir / f"{generate_uuid_filename()}.pdf"
+  
+  @abstractmethod
+  def convert(self) -> str:
+    """Convert input file to PDF and return the output path."""
+    pass
+
+
+class TextToPdfConverter(BaseConverter):
+  """Converter for text files to PDF."""
+  
+  def convert(self) -> str:
+    c = canvas.Canvas(str(self.output_path), pagesize=A4)
+    width, height = A4
+    with open(self.input_path, "r", encoding="utf-8") as f:
+      y = height - 50
+      for line in f:
+        c.drawString(50, y, line.strip())
+        y -= 15
+        if y < 50:
+          c.showPage()
+          y = height - 50
+    c.save()
+    return str(self.output_path)
+
+
+class ImageToPdfConverter(BaseConverter):
+  """Converter for image files to PDF."""
+  
+  def convert(self) -> str:
+    image = Image.open(self.input_path)
+    rgb_image = image.convert("RGB")
+    rgb_image.save(self.output_path)
+    return str(self.output_path)
+
+
+class WordToPdfConverter(BaseConverter):
+  """Converter for Word files (.docx) to PDF using pypandoc."""
+  
+  def convert(self) -> str:
+    pypandoc.convert_file(
+      str(self.input_path), "pdf", outputfile=str(self.output_path)
+    )
+    return str(self.output_path)
+
+
+# Placeholders for future extensions
+class HtmlToPdfConverter(BaseConverter):
+  """Placeholder for HTML to PDF converter."""
+  
+  def convert(self) -> str:
+    raise NotImplementedError("HTML to PDF conversion not implemented.")
+
+
+class ExcelToPdfConverter(BaseConverter):
+  """Placeholder for Excel to PDF converter."""
+  
+  def convert(self) -> str:
+    raise NotImplementedError("Excel to PDF conversion not implemented.")
+
+
+class MarkdownToPdfConverter(BaseConverter):
+  """Placeholder for Markdown to PDF converter."""
+  
+  def convert(self) -> str:
+    raise NotImplementedError("Markdown to PDF conversion not implemented.")